1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x321ae9534c5ac979284e20a1a09656946ea8e4a449ffe5ffa84c1054c5b2c638. Chain 2 (Bitcoin): anchored in block 954533 (2026-06-20T08:57:02Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a5155684-0daf-41cf-928a-e9ae8f98fc44.json and https://artists.proofprofile.net/proofs/artist/a5155684-0daf-41cf-928a-e9ae8f98fc44.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fa31bf211a2bb75e2e26cb337ac4330f87a0a92944ebed6d976b024089ca1e2. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/UYB142224601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73f9971208812780579b94a3f8a32995418aa216fe6216432da41d1b3907f2c7. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/UYB142224604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75a12142af4d42fb2b23427747491c9d793b5c3aeb950e7b77ba79cecd54dae5. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/UYB142224607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac31e77bcd0a6a229a1b1c068968769413900e311e4da4942158379a90114e4e. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/UYB142224611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23b9b3e4223287d4bf8b97e2c468656072d3079481888c6233c501584ec729a2. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/UYB142224616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7515b11869918a026a2f3f32d5880dfc4376369df77afd114aed1c9e04fc77ca. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/UYB142224618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x689268e6760097c7b028c0b3ba42a7d88bc452bb38e7bb146fc317153054d229. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/UYM122400449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafb3e203f1ace0a3e9242a6589c078757f91a8b927f7128cf312a39fcf6f0e44. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/UYM122400451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b9c6da1a085de7aa32427c52a04c1d977e9042bac566cc8b2791124bef30958. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/UYM122400452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda58cd549966cb0654d89875fb1d3dcfdc018005cc30dafde52586c5d37ecd89. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/UYB141823901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3c646f8d908f0fa7c6c12526bc870846010712eac0bc3d788e4ec54c0d10461. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/UYM122400049.
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